Dye fluid dispensing meter



led Jem. 2, 1951 H. im STAFFQRD DYE; 'FLUID DIsPENsNG METER ATTORNEY WHN@ 1F F .FA TU L H4 BY 4721 Mam( Jg u Patented Aug. 4, 1953 2,647,663DYE, FLUID-DISEEN SING METER Harry L. Staiord, Alexandria, Va.,yassigner to the United States of America as represented :by theSecretary of Agriculture Application AJanuary 2, 1951, Serial No.204,058

3 Claims.

(Cl. Z22- 477) (Gran-,tea under Title 35, U. s. code (1952), sec. 266).

The invention herein described may bemanufactured and used by or for theGovernment of the United States of America for governmental purposesthroughout the world without the payment to me of any royalty thereon.

This invention relates to an apparatus for dispensing a liquid, such asaqueous dye, in uniform amounts. It particularly relates to a device forautomatically modifying or substantially controlling, or substantiallyhalting, the flow of liquid through an outlet by the movement of abuoyant shuttle to the outlet.

An object of this invention is an apparatus readily calibrated andadjusted to deliver a predetermined amount of liquid.

One embodiment of the invention is illustrated in the drawing, in which:

Figure 1 is a three dimensional view of the assembled apparatus;

Figure 2 is a View in elevation, partly in section, of the shuttlecylinder;

Figure 3 is a vertical section of the lower end of the shuttle and theshuttle cylinder.

Liquid from tank flows into chamber 2 through a lower opening (notshown) in the plate 3, near the lower edge. The function of chamber 2 isto provide a uniform head of liquid for the metering and dispensingapparatus. From chamber 2 the liquid flows through perforations d intopipe 5. During operation of the apparatus, when delivering liquid, theupper end of pipe 5 is open to the atmosphere. Air enters the upper endof pipe 5 and passes through openings 6 into chamber 2, as the contentsof the chamber are dispensed. A cap I is conveniently used when chamber2 is lled initially.

Pipe 5 is welded to chamber 2 and extends below it to provide a couplingend for attachment of the shuttle cylinder 8. Cylinder 8 is a pipehaving a one inch inside diameter. In the lower end of s is tted ashuttle seating number 9. Conventional coupling means I0, I2, I3 isemployed to attach hose I4. The liquid passes through hose Id and isdispensed by spring valve faucet I5.

The shuttle I6 is conveniently made of seamless aluminum tubing havingan outside diameter of three-fourths of an inch. As shown in Figure 3,the surface of the tubing is corrugated by grooves out therein. The twofaces of each groove are 90c and 66 to the axis of the tube. The depthof the groove is .025 inch. These corrugations decrease the weight ofthe tube, thus increasing its buoyancy, and also increase the frictionbetween the shuttle wall and the fluid 'Ihe lower end may be weighted,for example by means of screw I8, for added stability. Notches IQ 1n thelower end of the shuttle are provided for the purpose of bleeding thechamber 8 to counteract the suction in the hose curs during the intervalbetween the impact of the shuttle upon its seat 9 and the closing of thehose valve I5. This releases the shuttle and permits it to rise andcomplete its The degree angle of the seat sidewall 9U serves to correctany errat1c position of the Valve, by guiding 1t into positive contactwith the seat facing which is cut at degrees to the axis.

Rod 2D is adjusted in place to provide a stop 2| for the shuttle. lThedistance the shuttle travels is thus determined. Therefore, the positlonof the stop determines the amount of liquid delivered by the hose. Forexample, if the amount delivered is too little, the stop 2| should beraised. If the amount is too great, stop 2| should be lowered.

A gate valve (not shown) can be inserted below 9, to serve as additionalgreat that the range of adjustment of the shuttle stop 2| isinsuiiicient.

`Tank is not shown with an air vent, and no air vent is intended for thepreferred operation. During normal operation water will not spout out ofthe upper end of pipe 5. This is so because replacing air, passing fromapertures 6 the level in 2 is suiiiciently lowered.

Having thus described my invention, I claim:

receive the liquid and at the other end to delivery delivering thesubstantially uniform amount 'of liquid, a liquid faucet in the movementof the shuttle, the shuttle being free of liquid in the upright tubecaused upon opening the liquid faucet, and to seat upon the valve seatto arrest the outflow of liquid past the valve seat, the shuttle beingelongated longitudinally of the upright tube, the longitudinal surfaceof the shuttle being corrugated transversely to increase the frictionbetween the shuttle wall and the surrounding by-passing liquid duringthe descent of the shuttle, the means providing an intake for air and anoutlet for liquid being a conduit extending upwardly into the chamberand communicating through the upper face of the chamber with theatmosphere, said conduit having upper perforations permitting ingress ofair into the chamber and lower periorations per-v mitting flow of liquidfrom the chamber into the conduit and thence into the upright tube.

2. The apparatus of claim 1 in which a passage is provided between thelower end of the shuttle and the valve seat, in the lowermost posi-HARRY L. STAFFORD.

References Cited in the le 0I this patent UNITED STATES PATENTS NumberNumber Name Date Adams Aug. 26, 1902 Mueller et al June 23, 1914 DiehlNov. 22, 1932 Sekkel May 2, 1950 FOREGN PATENTS Country Date GermanySept. 28, 1880

